US6273238B1 - Apparatus and method for separating adjacent objects on a conveyor - Google Patents
Apparatus and method for separating adjacent objects on a conveyor Download PDFInfo
- Publication number
- US6273238B1 US6273238B1 US09/482,355 US48235500A US6273238B1 US 6273238 B1 US6273238 B1 US 6273238B1 US 48235500 A US48235500 A US 48235500A US 6273238 B1 US6273238 B1 US 6273238B1
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- Prior art keywords
- conveyor
- objects
- conveyors
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- Expired - Fee Related
Links
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- 238000000926 separation method Methods 0.000 abstract description 25
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/26—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles
- B65G47/30—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors
- B65G47/31—Devices influencing the relative position or the attitude of articles during transit by conveyors arranging the articles, e.g. varying spacing between individual articles during transit by a series of conveyors by varying the relative speeds of the conveyors forming the series
Definitions
- the present invention relates to an apparatus and method for separating adjacent objects on a conveyor. More particularly, the present invention is directed to a conveyor system which is capable of expanding a distance between two adjacent objects while moving the objects from one conveyor to another.
- Separator conveyors are used to separate objects on a moving conveyor line.
- objects to be conveyed from one point to another in a manufacturing line are fed to a conveyor which moves the objects throughout the line.
- objects are fed in bulk to a conveyor line.
- the objects may be fed through a combining apparatus which aligns the objects in single file.
- a combining apparatus which aligns the objects in single file.
- the single file line of objects is formed, the objects tend to remain in line, against one another.
- a spacing may be desired between adjacent objects in order to carry out certain screening, inspection or other operations on each object. If the objects are too close together, an operation being performed on one object may interfere with an operation being performed on an adjacent object. Accordingly, it is important to control spacing of adjacent objects on the conveyor line.
- a mechanical device physically separates adjacent objects.
- U.S. Pat. Nos. 1,689,247 and 1,463,527 disclose serpentine conveyor systems wherein a rotating drum having pins or fingers physically separate objects as they pass around the drum on the conveyor belt.
- U.S. Pat. No. 3,386,558 discloses a feeder mechanism in which a device having fixed, radially extending arms is cam driven so that, as the device rotates, pneumatic suction cup gripping means at the ends of the arms travel along a path for removing folded carton blanks from a hopper and depositing them atop stacked containers moving along a conveyor belt. Rotationally eccentric movement is provided to the means which carries the fixed arms thereon.
- U.S. Pat. No. 3,834,522 shows a transfer machine comprising a turret having a plurality of radially translatable carriages mounted thereon, which carriages are fitted with a suction cup for gripping a container.
- a cam track moves the carriages radially outwardly during rotation so as to enable the suction cups to grip the container at the unloading station, then retracts radially inwardly for transporting the container, and then moves radially outwardly to feed the container into the stacking device.
- the turret provides for intermittent movement between the stations to allow sufficient dwell time for the freshly printed containers to dry.
- U.S. Pat. No. 4,369,875 discloses a slightly different arrangement wherein a series of pins is rotatingly maintained on a separate endless belt conveyor.
- the endless belt conveyor is driven at approximately the same rate as the feed conveyor.
- the pins are inserted between adjacent objects thereby spreading the distance between those objects.
- U.S. Pat. No. 4,726,876 discloses an apparatus for changing the spacing between articles of a moving array of discrete articles, and includes transfer means mounted for orbiting along a closed orbital path passing through a receiving zone and a discharge zone.
- the orbital radius of the transfer means is adjustable to provide an orbital radius in the discharge zone which is different from that in the receiving zone.
- the transfer means are maintained in fixed, equal angular distances between them along the orbital path whereby the orbital path distance between adjacent transfer means is different in the discharge zone from that in the receiving zone thereby resulting in a different spacing between adjacent articles in the discharge zone from that in the receiving zone.
- Two or more orbital spacer means may be utilized in tandem to provide the change in spacing in stages.
- the present invention is used to separate adjacent objects on a conveyor line so that certain manufacturing operations can be performed on the objects, while at the same time avoiding the problems associated with the prior known techniques of separation.
- an object of the present invention to provide a separating conveyor system which is free of the aforementioned and other such disadvantages wherein adjacent objects on a moving conveyor can be spaced from one another without the use of independent separating devices.
- the present invention is a conveyor arrangement, which accelerates and separates adjacent objects.
- the separation is accomplished with minimal contact and without interposing any separating means or devices. It requires little or no adjustment to work with a variety of shaped and sized objects.
- the conveyor arrangement uses at least two so-called sideflexing conveyor chains arranged side-by-side similar to the conveyor chains shown in U.S. Pat. Nos. 4,823,939 and 5,779,027.
- This type of conveyor comprises flat topped links, which present an approximately continuous moving surface to the objects being conveyed.
- the invention includes an area of the conveyor where two such chains are moving in a curve and are adjacent and parallel.
- the objects to be conveyed and separated are introduced in single file on the first chain, and are riding near one margin of the chain.
- Each conveyor section includes a plurality of links.
- Each link tapers from its mid-section toward each end. When the chain enters a curve the taper allows the spaces between links to close without interference on the side toward the center of curvature and to open on the opposite side.
- Objects are placed onto the idle end of the first conveyor, The guide rail crowds the objects toward one edge of the conveyor.
- the objects are transferred from the first chain to the second chain in the curve, by a guide rail. They are now riding on the margin of the second conveyor.
- the link ends separate and accelerate, further separating the objects.
- the second chain is driven at a higher speed than the first chain.
- the linear velocity of the edge of the first chain at the outside of the curve is increased in consequence of the curvature and the linear velocity of the edge of the second chain at the inside of the curve is reduced in consequence of the curvature.
- the speeds of the chains are adjusted so the adjacent edges of the two conveyors along the curve are approximately the same. It is understood that “linear velocity” refers to the time rate of change of position of a body.
- the second chain enters a curve in the opposite direction, further accelerating and separating the objects.
- the objects are transferred to the third chain and the transfer and acceleration occurs, and when the third chain enters a straight-line section, the objects are again accelerated and separated.
- the process is same as transfer from first chain to second, and constitutes a second stage of the same process.
- FIG. 1 is schematic top view of a preferred embodiment of the instant invention
- FIG. 2 a is a diagrammatic plan view of two links of a preferred embodiment of a conveyor chain showing the preferred linkage
- FIG. 2 b is an end elevational view of the conveyor chain link shown in FIG. 2 a;
- FIG. 3 is a diagrammatic plan view of a conveyor chain including a plurality of the links shown in FIGS. 2 a and 2 b showing the swiveling action of the links as the chain passes from a curved to a straight to a curved path of motion;
- FIG. 4 is a diagrammatic plan view of a conveyor chain having adjacent objects thereon with the objects passing from curved to straight, and straight to curved, portions of the path, showing the objects becoming separated and accelerated;
- FIG. 5 is a diagrammatic plan view of adjacent conveyor chains showing objects being guided from one chain to the other in the curve, being separated and accelerated by virtue of the higher speed of the second chain.
- FIG. 1 shows a preferred embodiment of the present invention.
- the separator conveyor system generally designated by the numeral 10 comprises a first conveyor 12 , a second conveyor 14 , and a third conveyor 15 .
- First conveyor 12 comprises a feed section 16 , a first separation section 18 , and a first straightaway section 20 .
- Third conveyor 15 comprises a second separation section 24 , and a second straightaway, or discharge, section 26 .
- Feed section 16 merges into first separation section 18 at the line designated 28 .
- First separation section 18 then merges into first straightaway section 20 at the line designated 30 .
- First straightaway section 20 of first conveyor 12 merges into second separation section 24 of third conveyor 15 at the line designated 32 .
- Second separation section 24 then merges into second straightaway section 26 at the line designated 34 .
- First separation section 18 , first straightaway section 20 , and second separation section 24 comprise a separation zone.
- Second conveyor 14 comprises a first separation section 38 merging into a first straightaway section 40 which merges into a second separation section 42 . As can be seen from FIG. 1, second conveyor 14 runs alongside first conveyor 12 and third conveyor 15 in the separation zone.
- First, second, and third conveyors 12 , 14 , and 15 are preferably chain conveyors using links 44 of the type shown in FIGS. 2 a and 2 b.
- Each link 44 comprises a generally planar top plate 46 having a center hinge eye 48 at its trailing end and a pair of complementary hinge eyes 50 at its leading end.
- the leading end of each link 44 is pivotally connected to the trailing end of an adjacent leading link 44 by a first hinge pin (not shown).
- the trailing end of each link 44 is pivotally connected to the leading end of an adjacent trailing link 44 by a second hinge pin (not shown).
- the leading and trailing edges 52 , 54 of each link 44 are beveled to permit relative pivotal movement or sideflexing in the horizontal direction.
- Links 44 may be fabricated of a suitable plastic or metal. Links of other shapes may be used as long as the desired flexing effect can be achieved. A suitably constructed elastomer belt could be used.
- a sideflexing chain is shown in FIG. 3 where the action of links 44 as they pass from a curve 56 to the right, to a straight section 58 , and into a curve 60 to the left can be seen.
- a plurality of links 44 are joined in a manner already described.
- the links 44 pivot so leading edge 52 of one link 44 essentially comes into contact with trailing edge 54 of the next adjacent link 44 at the inside of the curve.
- the gaps between the left ends of the links 44 are at their widest.
- the links are essentially symmetrically situated around the longitudinal axis with the gaps between adjacent links 44 at each end being essentially the same. In this area, the velocity has increased.
- FIG. 4 where, again, the direction of movement of the chain is shown by the arrow 62 .
- objects 64 and 66 may be separated or, as shown in FIG. 4, are essentially in contact.
- the ends of links 44 have drawn apart, thereby separating objects 64 and 66 .
- the ends of links 44 are further apart, thereby still further separating objects 64 and 66 .
- Feeder 68 comprises a hopper 70 in which the objects to be handled are stocked in bulk, an elevator conveyor 72 , and a prefeeder 74 .
- the hopper 70 is below the level of the separating conveyor.
- the elevator conveyor 72 raises the objects from hopper 70 and deposits them in prefeeder 74 which then feeds them by vibration in a known manner onto the feed section 16 of first conveyor 12 .
- any known type of feeder to feed the objects to be handled to the conveyor can be used.
- Conveyor 12 includes an adjustable guide 76 which moves the objects to one margin of the chain. At the same time, the objects are marshaled into single file.
- Guide 76 is adjustable to account for objects of varying shapes and sizes and may include fixtures (not shown) to discriminate the objects based on their orientation, and may turn the objects or reject some of them to fall back to hopper 70 .
- guide 76 is illustrated as a pivotable bar, other embodiments are also contemplated, such as a pneumatic system, a robotic arm, or a fixed guide rail.
- First conveyor 12 is driven by a motor and transmission 78 as is well-known in the art.
- Second conveyor 14 is also driven by a known motor and transmission arrangement 80 , preferably at a higher speed than first conveyor 12 .
- Third conveyor 15 is also driven by a known motor and transmission arrangement 81 , preferably at a higher speed than second conveyor 14 .
- the difference in speed between the first and second conveyors, and between the second and third conveyors, can easily be determined by those skilled in the art.
- Conveyors 12 , 14 , and 15 are all driven in the direction shown by the arrow 82 .
- Conveyors 12 and 14 are positioned such that adjacent edges of the chains align and the tops of the chains are essentially coplanar, thereby allowing for easy movement of articles from one chain to another.
- Suitably adjusted guides 84 and 86 move the objects from first conveyor 12 to second conveyor 14 .
- Guides 84 and 86 can be of similar construction as guide 76 .
- conveyors 14 and 15 are positioned such that adjacent edges of the chains align and the tops of the chains are essentially coplanar, thereby allowing for easy movement of articles from one chain to another.
- Suitably adjusted guides 88 and 90 move the objects from second conveyor 14 to third conveyor 15 .
- Guides 88 and 90 can be of similar construction as guides 76 and/or guide 76 .
- Objects to be handled, stored in hopper 70 are conveyed to prefeeder 74 by elevator conveyor 72 .
- Prefeeder 74 then feeds the objects to feed section 16 of first conveyor 12 .
- any suitable feed apparatus could be used to feed the objects to the conveyor 12 .
- the hopper-elevator conveyor-prefeeder arrangement is the presently preferred such device.
- the objects are then guided by guide 76 into single file and onto second conveyor 14 by guides 84 and 86 .
- the objects are separated and accelerated where chain 12 enters the curve at first separation section 38 and the ends of links 44 separate.
- the objects are further separated and accelerated during the transfer to chain 14 and again where chain 14 leaves the curve and enters the first straightaway section 40 .
- Guides 88 and 90 guide the objects from second chain 14 to third chain 15 at the second separation section 24 .
- the objects are separated where chain 14 enters the curve, again where they transfer to chain 15 , and again where chain 15 exits the curve and enters the final straightaway 26 .
- the objects then pass through a machine 92 which affixes an adhesive label, a device 94 to press the label firmly in place, a reading station 96 which confirms the label is readable, and a blow off station 98 which takes the objects which do not have readable labels and deposits them into bin 100 .
- the objects then go on to the next processing stage schematically shown at 102 .
- Element 102 may be a bin, or another conveyor, or any suitable continuation of the flow. Suitable sensors, whether photoelectric or mechanical, controllers, etc., all well-known in the art, may be used to control the operation of all or part of the system.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/482,355 US6273238B1 (en) | 2000-01-14 | 2000-01-14 | Apparatus and method for separating adjacent objects on a conveyor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US09/482,355 US6273238B1 (en) | 2000-01-14 | 2000-01-14 | Apparatus and method for separating adjacent objects on a conveyor |
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US6273238B1 true US6273238B1 (en) | 2001-08-14 |
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US09/482,355 Expired - Fee Related US6273238B1 (en) | 2000-01-14 | 2000-01-14 | Apparatus and method for separating adjacent objects on a conveyor |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6563901B2 (en) | 2001-10-05 | 2003-05-13 | Donald R. Wooldridge | Multi-head counting system with size discrimination |
US20040007438A1 (en) * | 2002-06-24 | 2004-01-15 | John Baranowski | Dispensing systems and methods |
US20040007444A1 (en) * | 2002-06-24 | 2004-01-15 | John Baranowski | Dispensers and methods of dispensing items |
US20040016765A1 (en) * | 2002-06-24 | 2004-01-29 | John Baranowski | Control systems and methods of dispensing items |
US20040053449A1 (en) * | 2002-09-13 | 2004-03-18 | Chich-Shang Chang | Method for producing plastic active panel displays |
US20040134926A1 (en) * | 2002-06-24 | 2004-07-15 | John Baranowski | Dispensing systems and methods |
US20040134758A1 (en) * | 2002-06-24 | 2004-07-15 | John Baranowski | Dispensers and methods of dispensing items |
US20040148056A1 (en) * | 2002-06-24 | 2004-07-29 | John Baranowski | Control systems and methods of dispensing items |
US20040164088A1 (en) * | 2002-06-24 | 2004-08-26 | John Baranowski | Dispensing and diversion systems and methods |
US7036679B2 (en) | 2002-06-24 | 2006-05-02 | John Baranowski | Dispensing and diversion systems and methods |
CN113562401A (en) * | 2021-07-23 | 2021-10-29 | 杭州海康机器人技术有限公司 | Control target object transmission method, device, system, terminal and storage medium |
US20220289498A1 (en) * | 2021-03-10 | 2022-09-15 | Fameccanica.Data S.P.A | Apparatus and method for varying the pitch between moving articles |
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US1463527A (en) | 1922-07-25 | 1923-07-31 | Henry L Guenther | Can feeding and timing device |
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US4544059A (en) | 1981-07-03 | 1985-10-01 | De Forenede Bryggerier A/S | Apparatus for combining several rows of bottles or similar objects on an inlet conveyor to a single row on an outlet conveyor |
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US5076422A (en) | 1990-08-29 | 1991-12-31 | Tekno Incorporated | Side-flexing chain with wheels |
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US5782332A (en) | 1994-08-19 | 1998-07-21 | Sasib Packaging Italia S.R.L. | Device and corresponding method for grouping together random product flows into a single path according to a pre-established and adjustable rate of advance |
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US6098785A (en) * | 1997-06-20 | 2000-08-08 | Klockner Hansel Tevopharm B.V. | Conveyor device for accelerating a series of products |
-
2000
- 2000-01-14 US US09/482,355 patent/US6273238B1/en not_active Expired - Fee Related
Patent Citations (14)
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---|---|---|---|---|
US1463527A (en) | 1922-07-25 | 1923-07-31 | Henry L Guenther | Can feeding and timing device |
US1689247A (en) | 1926-09-17 | 1928-10-30 | Max Ams Machine Co | Conveying and accelerating device |
US1820562A (en) | 1928-06-15 | 1931-08-25 | Henry L Guenther | Accelerating can feed |
US3717236A (en) | 1970-01-29 | 1973-02-20 | Molins Ltd | Conveying apparatus |
US3847273A (en) | 1973-04-02 | 1974-11-12 | Scott Paper Co | Turning device for flexible web product |
US4544059A (en) | 1981-07-03 | 1985-10-01 | De Forenede Bryggerier A/S | Apparatus for combining several rows of bottles or similar objects on an inlet conveyor to a single row on an outlet conveyor |
US4456117A (en) * | 1981-11-23 | 1984-06-26 | Lasalle Machine Tool, Inc. | Conveyor with slow down section |
US4823939A (en) | 1985-10-31 | 1989-04-25 | Rexnord Kette Gmbh & Co Kg | Curved path chain conveyor |
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US6098785A (en) * | 1997-06-20 | 2000-08-08 | Klockner Hansel Tevopharm B.V. | Conveyor device for accelerating a series of products |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6563901B2 (en) | 2001-10-05 | 2003-05-13 | Donald R. Wooldridge | Multi-head counting system with size discrimination |
US7099741B2 (en) | 2002-06-24 | 2006-08-29 | Campbell Soup Company | Control systems and methods of dispensing items |
US20040016765A1 (en) * | 2002-06-24 | 2004-01-29 | John Baranowski | Control systems and methods of dispensing items |
US7036679B2 (en) | 2002-06-24 | 2006-05-02 | John Baranowski | Dispensing and diversion systems and methods |
US7063215B2 (en) | 2002-06-24 | 2006-06-20 | Campbell Soup Company | Control systems and methods of dispensing items |
US20040134926A1 (en) * | 2002-06-24 | 2004-07-15 | John Baranowski | Dispensing systems and methods |
US20040134758A1 (en) * | 2002-06-24 | 2004-07-15 | John Baranowski | Dispensers and methods of dispensing items |
US20040148056A1 (en) * | 2002-06-24 | 2004-07-29 | John Baranowski | Control systems and methods of dispensing items |
US20040164088A1 (en) * | 2002-06-24 | 2004-08-26 | John Baranowski | Dispensing and diversion systems and methods |
US6993884B2 (en) | 2002-06-24 | 2006-02-07 | Campell Soup Company | Dispensing systems and methods |
US20040007444A1 (en) * | 2002-06-24 | 2004-01-15 | John Baranowski | Dispensers and methods of dispensing items |
US7152756B2 (en) | 2002-06-24 | 2006-12-26 | Campbell Soup Company | Dispensing systems and methods |
US20040007438A1 (en) * | 2002-06-24 | 2004-01-15 | John Baranowski | Dispensing systems and methods |
US7128204B2 (en) | 2002-06-24 | 2006-10-31 | Campbell Soup Company | Dispensers and methods of dispensing items |
US7128203B2 (en) | 2002-06-24 | 2006-10-31 | Campbell Soup Company | Dispensers and methods of dispensing items |
US20040053449A1 (en) * | 2002-09-13 | 2004-03-18 | Chich-Shang Chang | Method for producing plastic active panel displays |
US20220289498A1 (en) * | 2021-03-10 | 2022-09-15 | Fameccanica.Data S.P.A | Apparatus and method for varying the pitch between moving articles |
US11905123B2 (en) * | 2021-03-10 | 2024-02-20 | Fameccanica.Data S.P.A. | Apparatus and method for varying the pitch between moving articles |
CN113562401A (en) * | 2021-07-23 | 2021-10-29 | 杭州海康机器人技术有限公司 | Control target object transmission method, device, system, terminal and storage medium |
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Owner name: BATCHING SYSTEMS, INC., MARYLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WOOLDRIDGE, DONALD;REEL/FRAME:010543/0418 Effective date: 20000112 |
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